Cycling & running events in Skien-Porsgrunn, 2026

Skien-Porsgrunn Training Notes

Running: Locals run the easy stuff by the water and save the punchier work for the hills. The waterfront route is 6 km out-and-back, so it works for warmups, Z2, or a clean shakeout. The long route is 89 km with 355 m of gain, so nobody calls that flat. The medium route is 35 km with 242 m of gain. BDO-mila Skien, Byløpet, Trimkarusellen Grenland, Hessjøen Rundt, and the Geiteryggen runs keep the calendar honest.

Cycling: Locals ride a mixed bag here, and that is the point. The route covers 5 km with 496 m of ascent, with most of it on paved or asphalt surfaces and a chunk left undefined. National Gravel Route 2: Telemark ends in Porsgrunn after 425 km and 7535 m of gain, and its 55% unpaved split makes it proper gravel, not just road with dust. The route runs 5 km from Porsgrunn through Skien to Dalen with 3,593 m up. The climbs sit in the hills east of the city.

Season: May through October is the clean riding window, especially if Route 2 or longer gravel days are in the plan. Summer gives you long base miles, waterfront runs, Telemarkskanalen days, and enough surface variety for intervals, gravel, asphalt, and off-road work. Snow can linger on high-altitude gravel tracks until May, so locals do not rush the big stuff too early. Winter changes the rhythm for both sports: runners lean on the waterfront and lower routes, while riders keep the bigger gravel and gran fondo ideas for the months when the tracks are ready.